rearrange weather widget, add uv index

Close #1630

plugins/sdk/src/main/java/de/mm20/launcher2/sdk/weather/Forecast.kt

@@ -180,6 +180,11 @@ data class Forecast(
      * Clouds in percent
      */
     val clouds: Int? = null,
+
+    /**
+     * UV index (0-11)
+     */
+    val uvIndex: Double? = null,
     /**
      * Location name
      */

plugins/sdk/src/main/java/de/mm20/launcher2/sdk/weather/WeatherProvider.kt

@@ -86,6 +86,7 @@ abstract class WeatherProvider(
                     put(ForecastColumns.Precipitation, it.precipitation?.mm)
                     put(ForecastColumns.RainProbability, it.rainProbability)
                     put(ForecastColumns.Clouds, it.clouds)
+                    put(ForecastColumns.UvIndex, it.uvIndex)
                     put(ForecastColumns.Location, it.location)
                     put(ForecastColumns.Provider, it.provider)
                     put(ForecastColumns.ProviderUrl, it.providerUrl)